# ASSIGNMENT SUBMISSION AND ASSESSMENT _________________________________________________________________________ MOTION, FLUIDS & WAVES MAY 2012...

ASSIGNMENT SUBMISSION AND ASSESSMENT _________________________________________________________________________ MOTION, FLUIDS & WAVES MAY 2012 _________________________________________________________________________ INSTRUCTIONS TO STUDENTS 1. This assignment contains only TWO (2) questions that are set in the language of the printed module for the course XXXXXXXXXXAnswer in Malay or English XXXXXXXXXXYour assignment should be prepared individually. You should not copy another person’s assignment. You should also not plagiarise another person’s work as your own.
Document Preview:

ASSIGNMENT SUBMISSION AND ASSESSMENT_________________________________________________________________________ MOTION, FLUIDS & WAVESMAY 2012_________________________________________________________________________ INSTRUCTIONS TO STUDENTS1. This assignment contains only TWO (2) questions that are set in the language of the printed module for the course. 2. Answer in Malay or English.3.Your assignment should be prepared individually. You should not copy another person’s assignment. You should also not plagiarise another person’s work as your own. Created with an evaluation copy of Aspose.Words. To discover the full versions of our APIs please visit: https://products.aspose.com/words/ASSIGNMENT QUESTION INSTRUCTION: ANSWER ALL QUESTIONSQUESTION 1Let A= 20i - 70j + 90k B= -30i + 60j C= -200i + 400k i XXXXXXXXXXCalculate A + 2B + C. ii XXXXXXXXXXObtain the magnitude of A + 2B + C. iii XXXXXXXXXXDetermine the dot product between B and C. iv XXXXXXXXXXCalculate [12 marks]A toy rocket is launched from the ground with velocity v = (5i +12j) m/s. XXXXXXXXXXFind the time taken by the toy rocket to attain maximum height. XXXXXXXXXXCalculate the maximum height attained by the toy rocket. XXXXXXXXXXCalculate the magnitude of the velocity just before it strikes the ground. Neglect the effects of air resistance. [8 marks]QUESTION 2A worker drags a box of mass 20 kg across a smooth floor by pulling a rope tied to the box as shown in Figure 1. The tension T in the rope is 400 N. Determine the resultant force acting on the box and its speed after 10 s. 60oT = 400 N20 kg kgkg kgFigure 1[8 marks] A block of weight 98 N slides down a plane inclined at 45° to the horizontal from rest. The length of the plane is 10 m. Let the coefficient of kinetic friction between the block and the plane be 0.2. Obtain the acceleration of the block as it moves down the plane.Determine...

## Solution

David answered on Dec 20 2021
SBSC4103: Measurement and Evaluation in Science
ASSIGNMENT SUBMISSION AND ASSESSMENT
_________________________________________________________________________

MOTION, FLUIDS & WAVES
MAY 2012
_________________________________________________________________________

INSTRUCTIONS TO STUDENTS

1. This assignment contains only TWO (2) questions that are set in the language of the printed
module for the course.

2. Answer in Malay or English.

3. Your assignment should be prepared individually. You should not copy another person’s
assignment. You should also not plagiarise another person’s work as your own.

ASSIGNMENT QUESTION
QUESTION 1

a) Let
A= 20i - 70j + 90k
B= -30i + 60j
C= -200i + 400k
i) Calculate A + 2B + C.

ii) Obtain the magnitude of A + 2B + C.
iii) Determine the dot product between B and C.
iv) Calculate     .999 × - ×A B B A
[12 marks]
Solution
i)
i) A + 2B +C = 20i - 70j + 90k +2*(-30i + 60j) -200i + 400k = -240i +50j +490k

ii)
ii) Magnitude of A +2B +C = magnitude of (-240i +50j +490k) = Sqrt {(-240)2+ (50)2...
SOLUTION.PDF